Otacilia ailan Liu, Xu, Xiao, Yin & Peng, 2019 (DZḦŴṚff)

Figs 16–18

Otacilia ailan Liu et al., 2019: 439, figs 1A–C, 2A–B; Liu et al., 2022: Suppl. 2: 76, figs 141B, 142B, 143B.

Material examined. 1 ♁ 5 ♀, CHINA: Hunan Province: Chenzhou City, Yizhang County, Mangshan National Forest Park, Jiangjunzhai Scenic Spot (24.947814°N, 112.941690°E, 1262 m a.s.l.), 13 Nov. 2020, leg. Yannan Mu.

Diagnosis. This species is different from other Otacilia species by the following characters: 1) the absence of a retrolateral tibial apophysis, 2) tibia with a round, large ventral apophysis, 3) tegular apophysis thick, clavate-shaped in ventral view, 4) cymbium with a large, arch-shaped apophysis at the base retrolaterally, 5) copulatory ducts comma-shaped, and 6) connecting tubes absent.

Description. Male: total length 3.41, carapace 1.77 long, 1.55 wide; abdomen 1.64 long, 1.00 wide. Eye sizes and interdistances: AME 0.11, ALE 0.12, PME 0.09, PLE 0.11; AME–AME 0.04, AME–ALE 0.02, ALE–ALE 0.27, PME–PME 0.12, PME–PLE 0.06, PLE–PLE 0.43, ALE–PLE 0.09. EAW 0.51, CRW 0.77, EAW/CRW 0.66, CRW/CW 0.50. MOA 0.28 long, anterior width 0.25, posterior width 0.31. CH 0.17, CH /AME 1.55. Labium 0.18 long, 0.24 wide. Sternum 1.02 long, 0.84 wide. Leg measurements: Ⅰ 7.47 (1.95, 0.67, 2.26, 1.77, 0.82), II 5.97 (1.59, 0.57, 1.58, 1.39, 0.84), III 4.43 (1.23, 0.43, 1.01, 1.06, 0.70), IV 7.21 (1.97, 0.55, 1.72, 2.05, 0.92). Spination: femur I d 2 pl 4, femur II d 1 pl 2, femur III–IV d 1, tibia Ⅰ pv 7 rv 8, tibia II pv 7 rv 7, metatarsus Ⅰ pv 4 rv 4, metatarsus II pv 4 rv 3. Legs yellow. Carapace black, with several shapes resembling flowing water droplets beside fovea. Abdomen black, without pattern, a large dorsal scutum in dorsal view (Fig. 16A, B).

Palp as in Fig. 17. Femoral apophysis weakly protruded, near middle part of femur. Tibia with large, round apophysis ventrally. Retrolateral tibial apophysis absent; prolateral tibial apophysis pronounced, round; dorsal tibial apophysis with wide base, tip curved, goose neck-shaped.Cymbium with an arc-shaped apophysis at retrolateral base. Tegulum thinner than cymbium, oval; tegular apophysis long, upwards, clavate in ventral view, thick in retrolateral view. Sperm duct distinct, U-shaped. Embolus short, spike-like, extending towards ventral side in retrolateral view. Conductor absent.

Female. See Liu et al. 2019.

Distribution. China (Hunan Province).